<script src="js/jquery-1.6.1.min.js"
type="text/javascript"></script>
<script type="text/javascript" language="javascript">
function refresh()
{
    $("#cnt").load("one");
}
</script>
<body>

<div id="cnt">
aaa
</div>
<input type="button" onclick="refresh()" name="R" value="------R------">
</body>